package day02;

public class VarDemo {
    public static void main(String[] args) {
        int adj = 4;
        int wide = 5;
        System.out.println("周长是:"+(adj*6));
        System.out.println("面积是:"+(wide*adj));

        double aa = 3.14156325412;
        int bb = (int)(aa*100);
        double cc = bb/100.0;
        long d=5;
        System.out.println(d);
        System.out.println(bb);
        System.out.println(cc);


    }
}
